化学配方数据库
| 配方类型： | COATINGS |
| 配方说明： | Solvents for Tars & Resins |
| 配方组成： | In cracking oils at high temperatures deposits are formed in lines which must be removed. The following solvent, preferably warmed, will dissolve this "gunk. Toluene/21 Methyl "Cellosolve"/30 Benzene/49 |
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